Note the last line of the script:
urlgrey()
The preceeding "code" defines urlgrey (assuming the initial part of the message was lost somewhere along the way). The last line runs it.
[link|http://www.cereus7.com/UGHome.html|Urlgrey Tea] is a Basic-like language for applets. Probably not what this is...
[link|http://news.spamcop.net/pipermail/spamcop-list/2001-October/022988.html|This] post to SpamCop.net discusses a similar obsfuscated script. Perhaps it's even from the same outfit.
HTH.
Cheers,
Scott.